Intraoperative 2-Dimensional Optical Coherence Tomography as a New Tool for Anterior Segment Surgery

Geerling, Gerd

doi:10.1001/archopht.123.2.253

Cited by 100 publications

(76 citation statements)

References 19 publications

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“…Nevertheless, it was not possible to investigate the SC in every individual. The answer to that failure can be found in the article of Geering et al [7]. The authors detailed the evaluation of angle structures, including SC and trabecular meshwork and explained the difficulties with the AS-TD-OCT.…”

Section: Sc Dimension Was Investigated By Ultrasound (80-mhz Andmentioning

confidence: 99%

Schlemms Canal in OCT Images in Glaucoma Patients and Healthy Subjects

Forgácová¹,

Lešták²,

Pitrová³

et al. 2013

J Clin Exp Ophthalmol

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Section: Sc Dimension Was Investigated By Ultrasound (80-mhz Andmentioning

confidence: 99%

Schlemms Canal in OCT Images in Glaucoma Patients and Healthy Subjects

Forgácová¹,

Lešták²,

Pitrová³

et al. 2013

J Clin Exp Ophthalmol

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“…4(a)) [70,113,114]. A dichroic mirror was used to fold the OCT beam into the path of one the oculars prior to the optical zoom module of the microscope.…”

Section: Optical Designs For Microscope-integrated Octmentioning

confidence: 99%

“…Importantly, these systems also could not render acquired volumetric data in real-time. Imaging of live surgery and surgical maneuvers was thus achieved using continuous high-resolution B-scans that could be generated with minimal motion artifacts [70,71,113,116,117,121,[125][126][127][128][129][130][131]. This OCT technology was incorporated into the three commercially-available MIOCT scanners for human ocular imaging [115,119,120], and the primary imaging protocol of these systems consisted of two high-resolution orthogonal B-scans or a single high-resolution B-scan centered at the region of interest (Fig.…”

Section: Live Two-dimensional Microscope-integrated Octmentioning

confidence: 99%

Review of intraoperative optical coherence tomography: technology and applications [Invited]

Carrasco-Zevallos

Viehland

Keller

et al. 2017

Biomed. Opt. Express

140

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During microsurgery, en face imaging of the surgical field through the operating microscope limits the surgeon's depth perception and visualization of instruments and subsurface anatomy. Surgical procedures outside microsurgery, such as breast tumor resections, may also benefit from visualization of the sub-surface tissue structures. The widespread clinical adoption of optical coherence tomography (OCT) in ophthalmology and its growing prominence in other fields, such as cancer imaging, has motivated the development of intraoperative OCT for real-time tomographic visualization of surgical interventions. This article reviews key technological developments in intraoperative OCT and their applications in human surgery. We focus on handheld OCT probes, microscope-integrated OCT systems, and OCT-guided laser treatment platforms designed for intraoperative use. Moreover, we discuss intraoperative OCT adjuncts and processing techniques currently under development to optimize the surgical feedback derivable from OCT data. Lastly, we survey salient clinical studies of intraoperative OCT for human surgery.

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“…OCT systems have been previously combined with surgical microscopes in order to obtain cross-sections of the sclera and cornea, but these systems were used in a "stop and check" scenario rather than for real-time guidance. [8,9] It is a challenge to integrate a SDOCT system into interactive eye surgery while satisfying clinicians' needs and preferences for high resolution, high signal-to-noise ratio (SNR), and real-time frame rates. In order to produce higher resolution images, more samples of the target need to be acquired, and higher contrast images with better SNR require a longer exposure for each individual A-scan (longer dwell time at each spot on the target).…”

Section: Introductionmentioning

confidence: 99%

Graphics Processor Unit (GPU) Accelerated Shallow Transparent Layer Detection in Optical Coherence Tomographic (OCT) Images for Real-Time Corneal Surgical Guidance

Mathai

Galeotti

Horvath

et al. 2014

Augmented Environments for Computer-Assisted Interventions

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Abstract. An image analysis algorithm is described that utilizes a Graphics Processor Unit (GPU) to detect in real-time the most shallow subsurface tissue layer present in an OCT image obtained by a prototype SDOCT corneal imaging system. The system has a scanning depth range of 6mm and can acquire 15 volumes per second at the cost of lower resolution and signal-to-noise ratio (SNR) than diagnostic OCT scanners. To the best of our knowledge, we are the first to experiment with non-median percentile filtering for simultaneous noise reduction and feature enhancement in OCT images, and we believe we are the first to implement any form of non-median percentile filtering on a GPU. The algorithm was applied to five different test images. On an average, it took ~0.5 milliseconds to preprocess an image with a 20 th -percentile filter, and ~1.7 milliseconds for our second-stage algorithm to detect the faintly imaged transparent surface.

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Intraoperative 2-Dimensional Optical Coherence Tomography as a New Tool for Anterior Segment Surgery

Cited by 100 publications

References 19 publications

Schlemms Canal in OCT Images in Glaucoma Patients and Healthy Subjects

Schlemms Canal in OCT Images in Glaucoma Patients and Healthy Subjects

Review of intraoperative optical coherence tomography: technology and applications [Invited]

Graphics Processor Unit (GPU) Accelerated Shallow Transparent Layer Detection in Optical Coherence Tomographic (OCT) Images for Real-Time Corneal Surgical Guidance

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